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Nanvivi/
SIFT1B-DiskANN

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SIFT-1B Dataset & Disk Index

The SIFT-1B (BigANN) dataset and pre-built disk-based ANN index. Built February 2026 on Intel Xeon 8462Y+ (Sapphire Rapids) with 800GB RAM.

	Build Parameters

Parameter Value

Dataset SIFT-1B (1,000,000,000 vectors, 128-dim, uint8)

Graph R 128 (max degree)

Build L 200 (search list size during construction)

PQ chunks 32 (4 dimensions per sub-quantizer)

Build time ~2 days

	Files




	


	Raw Data… See the full description on the dataset page: https://huggingface.co/datasets/Nanvivi/SIFT1B-DiskANN.